Amazon offers eBooks which you can add to Kindle and read it on your Computer, Mobile phones or Tablets by installing the Kindle application. Amazon offers some free eBooks also and the website Hundred Zeros is a catalog of best selling ebooks which are free on the Amazon, and the website is updated frequently.
Hundred Zeros allow you to choose your favorite category and displays the eBooks that are free under that category.
So if you like to read good books on your computer, mobile phones or Tablets install Kindle on your device and visit http://hundredzeros.com/ to find some good best selling free eBooks , add them to the Kindle, read it.